There are for now 65 Lenco BearCat in the IMCDb, and among them 49 have "on Ford F-550 Super Duty" as complement. Which is true, according to Lenco itself, but as all BearCat trucks are made on such a basis, and as Lenco don't really promote this part, is this complement really relevant?

Somewhat related question about the "on Ford chassis" used for these 3 BearCat replicas: can the Ford chassis really be identified from these screenshots?